Pad for dental impression trays



Nov; 25, 1924.

V. CUTTITTA PAD FOR DENTAL IMPRESSION TRAYS Filed Feb. 2'7 1924WITNESSES m INVENTOR Vnvclsxvr Curr/rm A TTORNE YS Patented Nov. 25,19241.

PAD FOR DENTAL IMPRESSION TRAYS.

Appflication filed February 27, 1924.

To all 107mm it may concern:

Be it known that I, VINoEN'r CU'r'riir'rA, a citizen of the UnitedStates, and a resident of the city of New York, borough of Manhattan, inthe county and State of New York, have invented a new and Improved Padfor Dental Impression Trays, of which the following is a full, clear,and exact description.

This invention relates to pads for dental impression trays, an object ofthe invention being to provide a pad composed of spongy material,preferably sponge rubber, which will take up excess moisture and whichwill readily conform to the shape of the mouth so as to exert but aminimum pressure on the impressions and gums and thus be relativelycomfortable and most ef ficient in the making of dental impressions.

The primary object of my invention is, therefore, to provide a pad ofsponge rubher and the like which will be supported by the tray eitherfor the upper or lower jaws, and in which pad the plaster of Paris orother material is located so that when the impressions is made the wateror saliva will be taken up by the pad, and, furthermore, the pad can beeffectually pressed into posi tion without undue discomfort to thepatient.

With these and other objects in view, the invention consists of certainnovel features of construction and combinations and arrangement of partswhich will be more fully hereinafter described and pointed out in theclaims.

In the accompanying drawings- Figure 1 is a perspective view of animpression tray for the upper jaw, showing my improved pad in positiontherein;

Figure 2 is a view in transverse section on the line 2--2 of Figure 1;

Figure 3 is a perspective view of the pad removed;

Figure 4 is a perspective view illustrating an impression tray for thelower jaw, showing my improved pad in position therein;

Figure 5 is a perspective view of the pad illustrated in Figure 4.

Serial No. 695,511.

Referring more particularly to Figures 1, 2 and 3 of the drawings, 1represents an impression tray for the upper jaw, 2 a handle thereon, and3 an upstanding flange extending around certain edges of the tray. 4represents my improved impression pad, which is of a shape to conform tothe internal contour of the tray 1 with its flange 3, and is securelyheld and confined in the tray by reason of its shape and the confiningflange, as will be readily understood. This pad 4 is preferably composedof sponge rubber of the desired thickness and while, of course, I do notwish to be limited to the use of rubber in a spongy form, as theinvention is broad enough to cover any spongy material which will answerfor the purpose, yet I believe that sponge rubber is preferablematerial, but I wish to have it understood that I use this term in itsbroadest possible sense.

In Figure f an impression tray 6 is illustrated for use in makingimpressions of the lower jaw, and this tray 6 has a handle 7 thereonwith flanges 8 in which my improved pad 9 is located, and conforms incontour to the internal contour of the tray. It is, of course, to beunderstood that the invention is not limited to the identical shape ofthe tray or pad but is broadly to the idea of a pad which constitutes areceptacle or mounting to the tray, and in use the plaster of Paris orother material for making the impression is located on the pad and whenpressed against the jaw the excess of water and other moisture will betaken up by the pad. Furthermore, the proper pressure may be had withoutundue discomfort to the patient because of the elasticity andflexibility of the material of the pad which readily conforms to theuneven surface of the mouth, providing an effectual cut-01f for moistureand plaster of Paris and insuring a perfect impression.

Various slight changes and alterations might be made in the general formof the parts described without departing from my invention, and, hence,I do not limit n'iyself to the precise details set forth but considermyself at liberty to make such slight changes and alterations as fairlyfall Within the spirit and scope of the appended claims.

I claim:

1. As a new article of manufacture, a pad for dental impression trayscomposed of sponge rubber, constructed and adapted to removably fit adental tray, and constituting a support or receptacle for plastic1naterial in which the impression is to be made. 10

2. The combination with a dental impression tray, of a pad oi. spongerubber fitting the tray and constituting a support or receptacle forplastic material in which the impression is to be made.

VINCENT CUT'II'VIXK.

